What limits productivity in polar regions?
A) low temperatures of the surface waters
B) high density of the surface waters
C) The thermocline acts as a barrier to mixing of surface and deep waters.
D) the lack of sunlight year round
E) all of the above
Correct Answer:
Verified
Q19: The Atlantic Ocean is saltier than the
Q20: The average salinity of seawater is _.
A)0)01%
B)0)27%
C)3)5%
D)19.8%
E)30.0%
Q21: Productivity is the amount of carbon fixed
Q22: Hydrothermal vents provide a unique deep sea
Q23: Organisms that feed through a food web
Q25: Most marine animals live near the surface
Q26: Fish most commonly live _.
A)in the deepest
Q27: Seaweed (large marine algae)grows in shallow coastal
Q28: Organisms,such as algae and bacteria,that drift with
Q29: Animals capable of moving independent of the
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